https://bugs.kde.org/show_bug.cgi?id=510938
Bug ID: 510938
Summary: Powerdevil Crashes and Persistent libddcutil
Initialization on Fedora 42
Classification: I don't know
Product: kde
Version First unspecified
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 186028
--> https://bugs.kde.org/attachment.cgi?id=186028&action=edit
crash
Powerdevil (6.4.5) on Fedora 42 with Plasma 6 is unstable, crashing or exiting
unexpectedly. Despite setting POWERDEVIL_NO_DDCUTIL=1 and DdcUtilBackend
Enabled=false in powermanagementprofilesrc, libddcutil (2.2.1) continues to
initialize, causing issues. Logs show errors like
"org.kde.powerdevil.chargethresholdhelper.getthreshold failed" and
"org.kde.powerdevil.backlighthelper.brightness failed". Previously, a crash
occurred with "ddc_packet_io.c:332: Assertion 'bus_info' failed".
System:
• OS: Fedora 42
• Desktop: KDE Plasma 6
• Powerdevil: 6.4.5-1.fc42
• ddcutil: 2.2.1-1.fc42
• Hardware:
◦ CPU: AMD Ryzen 7 7800X3D 8-Core Processor (8 cores, 1 thread/core,
max 5053.377 MHz)
◦ GPU: AMD Navi 31 [Radeon RX 7900 XT/7900 XTX/7900 GRE/7900M] (rev
c8), AMD Raphael (rev cb)
◦ Monitors: 3 monitors Sceptre Tech Inc Sceptre F24, ASUSTek Computer
INC VG27A, Dell Inc. AW2725DF
Steps Tried:
1. Set POWERDEVIL_NO_DDCUTIL=1 in systemd override and DdcUtilBackend
Enabled=false.
2. Reinstalled powerdevil and ddcutil.
3. Renamed libddcutil.so.5 (caused Powerdevil to fail with status=127).
4. Reset powermanagementprofilesrc.
5. Added StandardOutput=journal and StandardError=journal to systemd
service.
Attachments:
• powerdevil.log (journalctl output)
nothing got printed to powerdevil_debug.log
Steps to Reproduce:
1. Start plasma-powerdevil: systemctl --user start plasma-powerdevil
2. Check status: systemctl --user status plasma-powerdevil
3. Monitor logs: journalctl --user -u plasma-powerdevil --since "10 minutes
ago"
Current State:
Powerdevil runs but logs show libddcutil initialization and errors
(chargethresholdhelper, backlighthelper). Manual brightness control via xrandr
works as a workaround.
Please advise on resolving libddcutil dependency and persistent errors.
--
You are receiving this mail because:
You are watching all bug changes.
